Simplify/Condense log of y+11 log of z

$\log (y) + 11 \log (z)$

Simplify $11 \log (z)$ by moving $11$ inside the logarithm.

$\log (y) + \log (z^{11})$

Use the product property of logarithms, $\log_{b} (x) + \log_{b} (y) = \log_{b} (x y)$ .

$\log (y z^{11})$